CERN Accelerating science

All CERN Accelerators documents

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2020-03-31
17:11
A new quench detection method for HTS magnets: stray-capacitance change monitoring / Ravaioli, E (CERN ; LBNL, Berkeley) ; Davis, D (LBNL, Berkeley ; Natl. High Mag. Field Lab.) ; Marchevsky, M (LBNL, Berkeley) ; Sabbi, GL (LBNL, Berkeley) ; Shen, T (LBNL, Berkeley) ; Verweij, A (CERN) ; Zhang, K (LBNL, Berkeley ; PSI, Villigen)
Fast quench detection is a key requirement for the successful implementation of superconducting magnet technology. In high temperature superconductor magnets, this issue is especially challenging due to the low quench propagation velocity, and presently represents one of the main factors limiting their application. [...]
2019 - 12 p. - Published in : Phys. Scr. 95 (2019) 015002

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2020-03-31
17:11
Development of a rotating-coil scanner for superconducting accelerator magnets / Rogacki, P (CERN ; RWTH Aachen U.) ; Fiscarelli, L (CERN) ; Russenschuck, Stephan (CERN) ; Hameyer, K (RWTH Aachen U.)
The superconducting magnets for High-Luminosity Large Hadron Collider (HL-LHC) upgrade project at CERN require magnetic measurements with high precision in field angle and multipole field errors. [...]
2019. - 9 p.

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2020-03-31
10:36
Intra-Bunch Motions / Metral, Elias (CERN)
Impedance-driven coherent beam instabilities are usually studied analytically with the linearised Vlasov equation, ending up with an eigenvalue system to solve [...]
CERN-ACC-NOTE-2020-0018.
- 2020.

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2020-03-29
18:03
Feasibility Study for NITE SiC/SiC as the Target Material for Pions/Muons Production at High-Power Proton Accelerator Facilities / Makimura, Shunsuke (J-PARC) ; Park, Joon-Soo (Muroran Inst. Tech.) ; Sato, Akira (Osaka U. (main)) ; Matoba, Shiro (J-PARC) ; Kawamura, Naritoshi (J-PARC) ; Yamazaki, Takayuki (J-PARC) ; Ninomiya, Kazuhiko (Osaka U. (main)) ; Tomono, Dai (Osaka U., Res. Ctr. Nucl. Phys.) ; Nakazato, Naofumi (Muroran Inst. Tech.) ; Calviani, Marco (CERN) et al.
The feasibility study for Nano-Infiltration and Transient Eutectic phase process SiC/SiC (NITE SiC/SiC)NITE SiC/SiC as a potential novel target material for pions/muons production at high-power proton accelerators facilities is in progress. Compared with graphite that is the principal target material for pions/muons production, higher transport efficiency and higher oxidation resistance can be expected. [...]
2020 - 6 p. - Published in : JPS Conf. Proc. 28 (2020) 031005 Fulltext: PDF;
In : 14th International Workshop on Spallation Materials Technology, Fukushima, Japan, 11 - 17 Nov 2018, pp.031005

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2020-03-25
16:02
Compensation of Synchrotron Radiation at Top Energy in the FCC-hh / Haas, Alexander (Vienna University of Technology (AT)) ; Timko, Helga (CERN)
To counteract the significant synchrotron radiation damping in the FCC-hh, a continuous longitudinal emittance blow-up is foreseen at top energy. [...]
CERN-ACC-NOTE-2020-0017.
- 2019. - 8 p.
Full text

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2020-03-25
08:07
Application of Machine Learning to Beam Diagnostics / Fol, Elena (CERN ; Frankfurt U.) ; Coello de Portugal, Jaime Maria (PSI, Villigen) ; Franchetti, Giuliano (Darmstadt, GSI ; Frankfurt U.) ; Tomás, Rogelio (CERN)
Machine Learning (ML) techniques are widely used in science and industry to discover relevant information and make predictions from data. The application ranges from face recognition to High Energy Physics experiments. [...]
2019 - 7 p. - Published in : 10.18429/JACoW-FEL2019-WEB03
In : 39th International Free Electron Laser Conference, Hamburg, Germany, 26 - 30 Aug 2019, pp.311-317

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2020-03-25
04:07
Atomic physics studies at the Gamma Factory at CERN / Budker, Dmitry (Helmholtz Inst., Mainz ; UC, Berkeley) ; López-Urrutia, José R. Crespo (Heidelberg, Max Planck Inst.) ; Derevianko, Andrei (Nevada U., Reno) ; Flambaum, Victor V. (New South Wales U. ; Helmholtz Inst., Mainz ; Massey U., NZIAS) ; Krasny, Mieczyslaw Witold (Paris U., VI-VII ; CERN) ; Petrenko, Alexey (Novosibirsk, IYF ; CERN) ; Pustelny, Szymon (Jagiellonian U.) ; Surzhykov, Andrey (Braunschweig, Phys. Tech. Bund. ; Braunschweig Tech. U.) ; Yerokhin, Vladimir A. (Braunschweig, Phys. Tech. Bund. ; St. Petersburg Polytechnic Inst.) ; Zolotorev, Max (LBL, Berkeley)
The Gamma Factory initiative proposes to develop novel research tools at CERN by producing, accelerating and storing highly relativistic, partially stripped ion beams in the SPS and LHC storage rings. [...]
arXiv:2003.03855.
- 15 p.
Fulltext

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2020-03-25
04:07
Impact of the 50 Hz harmonics on the beam evolution of the Large Hadron Collider / Kostoglou, Sofia (CERN ; Natl. Tech. U., Athens) ; Arduini, Gianluigi (CERN) ; Intelisano, Leandro (CERN ; Rome U.) ; Papaphilippou, Yannis (CERN) ; Sterbini, Guido (CERN)
Since the beginning of the Large Hadron Collider (LHC) commissioning, spectral components at harmonics of the mains frequency (50 Hz) have been observed in the transverse beam spectrum. [...]
arXiv:2003.00140.
- 29 p.
Fulltext

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2020-03-24
17:10
Stripper foil investigations at Linac3 / Bellodi, Giulia (CERN) ; Kuchler, Detlef (CERN) ; Mahner, Edgar (CERN) ; Scrivens, Richard (CERN) ; Wenander, Fredrik John Carl (CERN)
This report contains a summary of the investigations performed on the carbon stripper foils at Linac3 during the period 2016 to 2018 [...]
CERN-ACC-NOTE-2020-0016.
- 2020. - 24 p.

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2020-03-24
11:23
Zemax ray tracing model for plasma waveguides / Bisesto, F (Frascati) ; Galletti, M (Lisbon, IST ; Rutherford) ; Curcio, A (CERN)
Plasma-based waveguides are currently employed for laser wakefield acceleration to extend the focal region of laser beams. [...]
2020.

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